Instructional Video
Khan Academy

Khan Academy: Split vs. Average (Video)

9th - 10th
In this video [3:04] lesson, students first need to make sure they understand exactly what happens in the split & average steps. Click link to go to the Environment Modeling lesson. In the first part of the lesson we'll be looking...
Instructional Video
Khan Academy

Khan Academy: Introduction to Subdivision Surfaces

9th - 10th
This video [1:59] is an introduction to subdivision surfaces. You can animate it using just a couple of points so we've solved the complex problem of creating curves by breaking it down into steps we can solve with math.
Instructional Video
Khan Academy

Khan Academy: Subdividing Your Own Design (Video)

9th - 10th
In this interactive video lesson [1:05] you can move points, as before, but you can also add as many new points as you'd like. Just click on an interior of an edge to create a new point. And, then, use the mouse to drag the new point...
Instructional Video
Khan Academy

Khan Academy: Subdivide Operation (Video)

9th - 10th
In this video lesson [1:45] we can combine split and average into a single operation called subdivide. Click link to review midpoints. Click link to go to the Environment Modeling lesson.
Instructional Video
Khan Academy

Khan Academy: Fun With Weights (Video)

9th - 10th
Let's take a closer look at the weights used during subdivision in this video [2:52]. Do we have to be careful when selecting weights? Click "Click here" to learn more about Pascal's Triangle and the Binomial theorem. Click "Click here"...